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Screening Methodologies to Support Risk and Technology Reviews (RTR): A Case Study Analysis
Citation:
Screening Methodologies to Support Risk and Technology Reviews (RTR): A Case Study Analysis.
Impact/Purpose:
The document titled “Screening Methodologies to Support Risk and Technology Reviews (RTR): A Case Study Analysis” presents specific enhancements made to our risk assessment methodologies, particularly to our acute, multipathway, and environmental screening methodologies developed since the last SAB review was completed in 2010. This document will be the subject of an SAB review where EPA will specifically be seeking input on the scientific credibility of these screening methodologies, as well as on the scientific credibility of a number of additional enhancements made to our inhalation risk assessment.
Description:
The Clean Air Act establishes a two-stage regulatory process for addressing emissions of hazardous air pollutants (HAPs) from stationary sources. In the first stage, the Act requires the EPA to develop technology-based standards for categories of industrial sources. We have largely completed the required “Maximum Achievable Control Technology” (MACT) standards. In the second stage of the regulatory process, EPA must review each MACT standard at least every eight years and revise them as necessary, “taking into account developments in practices, processes and control technologies.” We call this requirement the “technology review.” EPA is also required to complete a one-time assessment of the health and environmental risks that remain after sources come into compliance with MACT. This residual risk review also must be done within 8 years of setting the initial MACT standard. If additional risk reductions are necessary to protect public health with an ample margin of safety or to prevent adverse environmental effects, EPA must develop standards to address these remaining risks. Because the risk review is an important component of the RTR process, EPA is seeking SAB input on the scientific credibility of specific enhancements made to our risk assessment methodologies, particularly with respect to screening methodologies, since the last SAB review was completed in 2010. These enhancements to our risk methodologies are outlined in the document titled: “Screening Methodologies to Support Risk and Technology Reviews (RTR): A Case Study Analysis”
URLs/Downloads:
Agency Charge MemorandumFinal SAB Report
Peer Review Plan (PDF, NA pp, 34 KB, about PDF)
Agency Charge Memorandum (PDF, NA pp, 96 KB, about PDF)
Screening Methodologies to Support RTRs: A Case Study Analysis (PDF, NA pp, 11656 KB, about PDF)
Screening Methodologies to Support RTRs: A Case Study Analysis
Agency Charge Memorandum (PDF, NA pp, 96 KB, about PDF)